They are a bit out of fashion these days.

The main use-case was multiplexing terminals and, after tmux provided a solution that was usable by normal users, it seduced people away.

Also, mouse-first tiling was introduced on Windows so nowadays it is almost universal to have a degree of tiling.

They are nice for terminals and browsing properly-written web pages but for anything with an aspect ratio or a fixed size they are clumsy.

Modern tiling-wms often have a floating mode so the distinction is more keyboard-wm vs mouse-wm.